It's the Grand Final, Joss Stone is a guest panellist, and TV's biggest musical mystery will finally be solved. The final three masked singers compete to be crowned the champion.
| Name | Type | Role | |
|---|---|---|---|
| Joel Dommett | Host | ||
| Nicola Roberts | Guest Star | ||
| Jason Manford | Guest Star | ||
| Aston Merrygold | Guest Star | ||
| Joss Stone | Guest Star |